src/Tag.js
/**
* Tag is a key-value pair in InfluxDB’s data structure that records metadata.
* See: https://docs.influxdata.com/influxdb/latest/concepts/glossary/#tag
*
* @public
* @typedef {Object} Tag
* @property {String} key The key part of the key-value pair that makes up a tag.
* @property {String} value The value part of the key-value pair that makes up a tag
*
* @example
* let tag={
* key: 'location',
* value: 'outdoor'
* }
*
*/